woocommerce_email_get_option │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_email_get_option', 'wp_kama_woocommerce_email_get_option_filter', 10, 4 );

/**
 * Function for `woocommerce_email_get_option` filter-hook.
 * 
 * @param  $value       
 * @param  $that        
 * @param  $key         
 * @param  $empty_value 
 *
 * @return 
 */
function wp_kama_woocommerce_email_get_option_filter( $value, $that, $key, $empty_value ){

	// filter...
	return $value;
}

$value

-

$that

-

$key

-

$empty_value

-

Where the hook is called

return apply_filters( 'woocommerce_email_get_option', $value, $this, $value, $key, $empty_value );

Where the hook is used in WooCommerce